ASTROSAT CZTI

Data Quality Report

Orbit 08591

Creation date: 2024-06-27T15:34:41.625971
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A03_102T01_9000001202_08591cztM0_level2.evt modeM0/AS1A03_102T01_9000001202_08591cztM0_level2_quad_clean.evt
Size (bytes)919,690,560233,821,440
Size877.1 MB 223.0 MB
Events in quadrant A6,911,6511,518,832
Events in quadrant B7,038,9201,565,638
Events in quadrant C6,273,5111,522,180
Events in quadrant D6,638,0001,466,388

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02960
B02960
C02960
D02960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310225
B0307587
C0296144
D0307986

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A146222491.702913%
B146211220.834416%
C14622740.506087%
D146211821.244785%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 15608 14624 110 110 0.70% 0.75%
B 15608 14625 25 25 0.16% 0.17%
C 15608 14625 3 3 0.02% 0.02%
D 15608 14624 67 67 0.43% 0.46%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 223 181165 545.34 1629 1592 329.3
A 13 248 166234 500.0 1629 1592 329.3
A 5 16 78960 234.96 1629 1592 329.3
B 0 214 233671 738.55 1652 1608 314.2
B 0 219 112603 353.25 1652 1608 314.2
B 4 80 91295 285.43 1652 1608 314.2
C 14 234 20125 50.09 1597 1601 369.8
C 13 61 12349 29.06 1597 1601 369.8
C 8 222 11782 27.53 1597 1601 369.8
D 10 253 141363 361.99 1597 1544 386.2
D 1 52 111262 284.06 1597 1544 386.2
D 12 233 96380 245.53 1597 1544 386.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter